移动式操作平台的次梁，间距不应大于（）。
A.35cm
B.40cm
C.45cm
D.50cm
参考答案：B
绝对值小于3.5的整数的个数是( ).
A．8
B．7
C．6
D．5
It has rained for a whole day.But I think it's going to ___.
A．put up
B．clear up
C．build up
D．call up
